Immunogen sequence: MGNGTEEDYN FVFKVVLIGE SGVGKTNLLS RFTRNEFSHD SRTTIGVEFS TRTVMLGTAA VKAQIWDTAG LERYRAITSA YYRGAVGALL VFDLTKHQTY AVVERWLKEL YDHAEATIVV MLVGNKSDLS QAREVPTEEA RMFAENNGLL FLETSALDST NVELAFETVL KEIFAKVSKQ RQNSIRTNAI TLGSAQAGQE PGPGEKRACC ISL